Cleanroom Consulting Services - Dan Milholland

Airflow Visualization Technique for Cleanrooms

FloViz is a light multi-stranded, monofilament nylon material used to visually determine airflow patterns in cleanrooms. It exhibits minimum particulate shedding and has a high drag coefficient, thus making it suitable for cleanroom use.

FloViz is used predominately in one of three ways.

  1. For balancing raised floor and sidewall return dampers, FloViz is attached to the cleanroom ceiling on an 8’ x 8’ grid (2.4 m x 2.4 m). The length is cut approximately 2 feet (600 mm) above the floor. The airflow pattern for the entire room is easily visualized. The FloViz points to the area where dampers are to be closed.

  2. Airflow parallelism is measured throughout the cleanroom during testing and certification. A single length of FloViz is suspended from a mobile support stand. The stand is moved to designated locations within the cleanroom. The deflection of the FloViz from vertical is measured and the angle of deflection is calculated and reported.

  3. FloViz is used as a simple, convenient, material used to determine localized air current around equipment, doorways, and pass-throughs. It is useful to attach to the particle counter sample tubing near the sample probe during particle counting of cleanrooms. This will assure that the technician and particle counter stays downstream of particle count sample intake locations, thus not affecting the data.

Product Price*

1000 meter spool US$60

* Shipping is included for Continental United States. Please email for a shipping quotation for orders outside the Continental United States.

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